Wire anchoring device



April 2, 1940. w J 2,195,569

WIRE ANCHORING DEVI CE Filed March 23, 1939 //v VEN 70/? W J. H/LL A7ORA/Ek Patented Apr. 2, 1940 UNITED STATES PATENT OFFICE wmn ANCHORINGDEVICE Application March 23, 1939, Serial No. 263,611

6 Claims.

This invention relates to the anchoring of wire ends to a support and isparticularly applicable to the dead-ending of a wire to an insulator.

The object of the invention is to provide means 5 on a wire end foranchoring the wire to a suitable support. The support may be, forinstance, an insulator supported on a cross-arm of a pole.

A feature of the-invention resides in the form and arrangement of a loopmember adapted to engage a support.

Other features reside in the combination of the parts.

In the drawing:

Fig. 1 is a view in perspective of a port-ion of a 15 wire line systemand including a pole and crossarm for supporting the wires of thesystem;

Fig. 2 is a view in perspective of a portion of a wire to be dead-endedand the means I have devised for dead-ending the wire to an insulator;

Fig. 3 illustrates a step in the process 01' making the dead-endconnection;

Fig. 4 is a side view, partly in section, of the dead-end connectionmeans; 1

Fig. 5 shows a modification. of the structure shown in, Fig. 4; and

Fig. 6 is a crosssectional view of a portion of Fig. 4 taken on the line6-6 and enlarged relative to Fig. 4.

Figs. 2 to 6 are enlarged relative to Fig. 1.

In the dead-ending of wires, a common practice is to loop an end portionof the wire around an insulator and then wrap the end portion of thewire several times around a straight portion of the wire. Another commonpractice is to form a looped end on the wire and provide either a singleor. double-barrel sleeve on the parallel extending portions of the wireadjacent the loop and then twist the sleeve and the portions of the wireenclosed therein to maintain the wire end in looped formation.

When a wire is being dead-ended to an insulator supported, for instance,on the cross-arm of a pole, the lineman may readily loop the end of theWire about the insulator and twist the wire and even a sleeve appliedthereto to hold the parts together providing the wire and sleeve aremade of relatively soft material. The twisting and bending of the parts,however, have a tendency to weaken them.

In some cases, however, the wires employed are made of relatively hardand stiff material and cannot readily be bent and twisted to therequired form even by means of sleeve twisters or other suitable toolsin the hands of a lineman. on a pole.

In my invention no bending or twisting of the wire to be anchored isrequired, and hence a wire of relatively stiff and hard material may bereadily dead-ended to an insulator by a lineman working on a pole. Thedead-ending may also be accomplished without the application of bendingor twisting strains to the wire such as might cause weakening of thedead-ended parts.

To illustrate the invention, I have shown in Fig. 1 its application to aso-called open linewire system, the through line wires I, 2, 3 and 4 ofwhich are secured to insulators 5 supported on a cross-arm 6 or" a polel as commonly found in systems of the type above mentioned. The Wires 8and 9 are dead-ended to insulators 5 sup- .15 ported on the cross-arm 6.Each dead-ended Wire is anchored to an insulator 5 by means of a loopmember it and a sleeve 1 l, the loop member it being extended around theinsulator 5 and the sleeve ll being afiixed to an end of the 20 wire tobe dead-ended and to two paralielly disposed ends of the loop memberiii. The loop member ill may be made of any material found suitable forthe purpose but should have a crosssectional form at the point ofentrance to the sleeve ll suitable for inserting two parallelly arrangedend portions of the loop member into the sleeve H. The loop member It!may bemade, for instance, as shown in Figs. 2, 4, 5 and 6 of a suitablelength. of half round material, the cross-sectional dimension of whichis slightly less than half the internal diameter of the sleeve ii. Thelength of material is bent into the form of a loopsuitable for passingaround the insulator 5, the flat side of the material being 35 on theinside of the loop. The two free ends of the piece of material formingthe loop member iii are brought together in parallel relation with theflat sides 8 in face-to-face relation, the ends thus cooperativelyforming a cylindrical portion suitable for insertion into an end of thesleeve H. The two free end portions of the piece of material forming theloop member ID when thus brought together are inserted longitudinally inone end of the sleeve ii and pushed a sufiicient distance therein tomaintain the loop member H) in required form. he distance of insertion,for instance, may be about half-way through the sleeve H as shown inFigs. 4 and 5. An end of the wire, 8 or 9 tobe dead-ended is insertedlongia tudinally in an end of the sleeve .II opposite to that occupiedby the parallelly arranged ends of the loop member iii, the sleeve llhaving an internal diameter slightly greater than the diameter of thewire 8. The wire 8 is thrust about half-way through the bore of thesleeve II, as shown in Figs. 4 and 5. The sleeve II is then compressedabout the wire 8 and the two parallelly arranged ends of the loop memberIt to hold the parts together. The compressing of the sleeve may bereadily accomplished by means of a pair of roller dies I2 and I3, asshown in Fig. 3, the dies I2 and I3 being rolled along the sleeve toreduce the diameter of the sleeve II. Since the means for compressingthe sleeve forms no part of this invention, the specific means forperforming this operation is not herein shown. A suitable tool forcompressing the sleeve, however, is described and shown in W. S. Hayiordet al. Patent 1,896,512, issued February 7, 1933. The sleeve might alsobe compressed by means of the tool shown and described in W. S. Hayiordet a1. Patent 1,871,321, issued August 9, 1932. In this event, thesleeve would be compressed by means of two spaced inwardly movable diemembers rather than by means of a pair of rollers.

A stop may be formed in the bore of the sleeve I I to limit the extentof thrust of he ends of the loop member IQ and the wire 8 into thesleeve II. In Fig. l, the stop is simply an embossing I4 formed at arequired point in the bore of the sleeve II. The embossing it may beformed by striking the outside of the sleeve adjacent the desiredlocation of the stop with a suitable instrument and thus forming thestop It in the bore and a corresponding nicl: I 5 in the outside of thesleeve II as shown in Figs. 2 and i. The stop may also be in the form ofan annular embossing It in the bore of the sleeve as shown in Fig. 5. Inthis case, the embossing 56 may be made by annularly indenting theoutside of the sleeve II atll.

It is desirable that the loop member I8 be at least equal in tensilestrength to that of the Wire deadended thereby, and hat it be made ofmaterial sufficiently flexible to be bent into the loop form requiredwithout important impairment in its strength. The sleeve ii should bemade of material sufficiently soft to permit compression of the sleeveabout the inserted ends E8-i3 of the loop member it and the end of thewire 8 by means or" tools of the character above mentioned. In seinecases the wire to be dead-ended and the loop member and sleeve may bemade of copper or various compositions thereof, the material of the loopmember it having a greater tensile strength than that of the wire 8since the cross-sectional area of a single strand portion of the loopmember Iii is only about half that of the wire 8. In such cases I mayuse a copper sleeve and have the loop member id made of brass or bronze.vvhen the loop member ID is made of brass or bronze, the material may beannealed before bending into the required ioop form. After annealing andbending to the required form, the material of the loop member I!) may bein some instances subjected to a hardening process to make the materialsufficiently hard to resist deformation when the sleeve II is compressedabout the parts. This will result in the material of the loop member l5cutting slightly into the interior of the sleeve II and better holdingtogether of the loop member 56 and sleeve II.

When the wire to be dead-ended is a steel wire, the sleeve II and theloop member It may also be made of steel, the tensile strength of thesleeve II and the loop member I!) being at least equal to that of thewire 8 but the sleeve I I being sufficiently malleable to permitcompressing about the wire 8 and the end parts I8I8 of the loop memberID inserted therein.

Although the loop member [0 is shown in the figures in the drawing asbeing made of half round cross-sectional material and as having the samecross-sectional form throughout its entire length, it is obvious thatother cross-sectional form material may be employed and that thecross-sectional form of the ends inserted in the sleeve II need not becontinued throughout the entire length of the loop member ID and thatchanges such as above mentioned may be made without departing from thespirit of the invention.

What is claimed is:

1. In a dead-end connection for a wire, a sleeve, frictionally supportedon an end of said wire and extending longitudinally thereoi', a loopmember extending from an end of said sleeve opposite to that occupied bysaid wire, and end portions of said loop member held together within andby means of said sleeve and each of said end portions having across-sectional form equal to half the cross-sectional form of the boreof said sleeve.

2. In a dead-end connection for a wire comprising a cylindrically boredsleeve irictionally supported on an end of said wire, a half roundcross-sectional Wire bent into the form of a loop and having endportions parallelly arranged and frictionally held in said sleeve.

3. In a dead-end connection for a wire comprising a cylindrically boredsleeve frictionally supported on an end of said wire, a half roundcross-sectional wire having a tensile strength at least as great as iatof the first-mentioned wire and bent into the form of a loop, and endportions of said half round cross-sectional wire disposed in flatface-to-face relation within said sleeve and frictionally held in placein said sleeve.

4. In a dead-end connection for a wire, a sleeve of malleable materialirictionally supported on an end of said wire, a wire bent into the formof a loop and made of material harder than that of said sleeve and atleast equal in tensile strength to the wire first mentioned and endportions of the wire in said loop being about half the cross-sectionalsize and form of the wire first mentioned and said end portions beingfrictionally held in parallel relation in said sleeve.

5. In a dead-end connector, means for connecting a line splice to asupport comprising a loop element, said loop element comprising a.length of wire the opposite end portions of which are substantially hallround in cross-section and complementary to each other whereby toprovide a substantially cylindrical end for insertion in said linesplice.

6. In a dead-end connector, means for connecting a line splice to asupport comprising a loop element, said loop element comprising a lengthof wire the opposite end portions of which are complementary parts of asubstantially cylindrical end for insertion in said line splice.

WALTER J. HILL.

